Well if error is occurring due to DRM protection then you can remove the protection from your music and video files and then you will be able to easily play your media files (music and videos). In order to remove DRM protection you will need DRM Media Converter.
Key features of DRM Media Converter
-Support a large number of DRM audio and video files
-Output DRM-free audio and video files for different devices and players
-Also can handle common audio and video files
Generally, DRM removal software is used by the users to remove DRM legally, and then create DRM-free media. Which is one of the best way to deal with DRM algorithm, but choosing one of the best DRM removal tool is necessary.